// This file is part of Substrate.

// Copyright (C) Parity Technologies (UK) Ltd.
// SPDX-License-Identifier: Apache-2.0

// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// 	http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#![no_std]
#![no_main]
include!("../panic_handler.rs");

use uapi::{HostFn, HostFnImpl as api};

const DJANGO_FALLBACK: [u8; 20] = [4u8; 20];

#[no_mangle]
#[polkavm_derive::polkavm_export]
pub extern "C" fn deploy() {
	// Build the calldata: selector + ABI-encoded address
	let selector = uapi::solidity_selector("terminate(address)");
	let mut calldata = [0u8; 4 + 32];
	calldata[0..4].copy_from_slice(&selector);
	// ABI encode address: right-align into 32 bytes (pad with 12 leading zeros)
	calldata[4 + 12..4 + 32].copy_from_slice(&DJANGO_FALLBACK);

	let _ = api::call(
		uapi::CallFlags::ALLOW_REENTRY,
		&uapi::SYSTEM_PRECOMPILE_ADDR,
		u64::MAX,
		u64::MAX,
		&[u8::MAX; 32],
		&[0u8; 32],
		&calldata,
		None,
	).unwrap();
}

#[no_mangle]
#[polkavm_derive::polkavm_export]
pub extern "C" fn call() {}
